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BOSTON MARATHON 2023

Bethany Britz

Bib: 17969•F

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 38%
Gender (Female)
#0 / 11423
Top 19%
Division (F18-39)
#0 / 4884
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:58/mi
24:44
↑ 97↓ 3451.5%
10K· 6.21 mi
7:52/mi
49:09
↑ 79↓ 1380.4%
15K· 9.32 mi
7:53/mi
1:13:37
↑ 67↓ 78
20K· 12.43 mi
7:54/mi
1:38:09
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:43:26
↑ 19↓ 370.5%
25K· 15.53 mi
7:48/mi
2:02:21
↑ 66↓ 880.2%
30K· 18.64 mi
7:51/mi
2:26:44
↑ 181↓ 1480.2%
20M
7:39/mi
2:37:08
↑ 64↓ 500.2%
21M
8:01/mi
2:45:09
↑ 106↓ 241.6%
35K· 21.75 mi
7:02/mi
2:50:25
↑ 17↓ 861.7%
23M
7:22/mi
2:59:39
↑ 23↓ 630.6%
24M
7:12/mi
3:06:51
↓ 821.3%
40K· 24.85 mi
7:21/mi
3:13:08
↓ 200.3%
25.2M
7:53/mi
3:15:51
↑ 13↓ 160.2%
Finish· 26.22 mi
7:10/mi
3:23:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:43:26
Pace7:53 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:43
Pace7:36 /mi
📊Negative Split: 3.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1524:447:5824:44
7:58
-
10K
6.21 mi11:39:4049:097:5524:25
7:52
-0:06
15K
9.32 mi12:04:081:13:377:5424:28
7:53
+0:01
20K
12.43 mi12:28:401:38:097:5424:32
7:54
+0:01
Half
13.11 mi12:33:571:43:267:535:17
7:45
-0:09
25K
15.53 mi12:52:522:02:217:5318:55
7:48
+0:03
30K
18.64 mi13:17:152:26:447:5224:23
7:51
+0:03
20M
20.00 mi13:27:392:37:087:5110:24
7:39
-0:12
21M
21.00 mi13:35:402:45:097:528:01
8:01
+0:22
35K
21.75 mi13:40:562:50:257:505:16
7:02
-0:59
23M
23.00 mi13:50:102:59:397:499:14
7:22
+0:20
24M
24.00 mi13:57:223:06:517:477:12
7:12
-0:10
40K
24.85 mi14:03:393:13:087:466:17
7:21
+0:09
25.2M
25.20 mi14:06:223:15:517:462:43
7:53
+0:32
Finish
26.22 mi14:13:403:23:097:457:18
7:10
-0:43

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:02 /mi

Average Pace

7:45 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:41

22% of race

Time at Steady Pace

2:37:28

78% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:45 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:15:1524:447:5824:44
7:58
#13728
10K
6.21 mi11:39:4049:097:5524:25
7:52
#13669
15K
9.32 mi12:04:081:13:377:5424:28
7:53
#13560
20K
12.43 mi12:28:401:38:097:5424:32
7:54
#13301
Half
13.11 mi12:33:571:43:267:535:17
7:45
#13230
25K
15.53 mi12:52:522:02:217:5318:55
7:48
#12824
30K
18.64 mi13:17:152:26:447:5224:23
7:51
#12227
20M
20.00 mi13:27:392:37:087:5110:24
7:39
#11826
21M
21.00 mi13:35:402:45:097:528:01
8:01
#11553
35K
21.75 mi13:40:562:50:257:505:16
7:02
#11276
23M
23.00 mi13:50:102:59:397:499:14
7:22
#10879
24M
24.00 mi13:57:223:06:517:477:12
7:12
#10628
40K
24.85 mi14:03:393:13:087:466:17
7:21
#10402
25.2M
25.20 mi14:06:223:15:517:462:43
7:53
#10303
Finish
26.22 mi14:13:403:23:097:457:18
7:10
#10085
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi137283855385513301(Top 50%)3662(Top 32%)3662(Top 75%)
10K6.21 mi3.10 mi13669+593844+113844+1113633(Top 51%)3807(Top 33%)3807(Top 78%)
15K9.32 mi3.11 mi13560+1093791+533791+5313301(Top 50%)3662(Top 32%)3662(Top 75%)
20K12.43 mi3.11 mi13301+2593659+1323659+13212584(Top 47%)3301(Top 29%)3301(Top 68%)
Half13.11 mi0.68 mi13230+713619+403619+4012244(Top 46%)3036(Top 27%)3036(Top 62%)
25K15.53 mi2.42 mi12824+4063411+2083411+20811107(Top 42%)2533(Top 22%)2533(Top 52%)
30K18.64 mi3.11 mi12227+5973111+3003111+3009740(Top 37%)2037(Top 18%)2037(Top 42%)
20M20.00 mi1.36 mi11826+4012893+2182893+2187874(Top 30%)1362(Top 12%)1362(Top 28%)
21M21.00 mi1.00 mi11553+2732761+1322761+1327490(Top 28%)1321(Top 12%)1321(Top 27%)
35K21.75 mi0.75 mi11276+2772616+1452616+1455612(Top 21%)662(Top 6%)662(Top 14%)
23M23.00 mi1.25 mi10879+3972438+1782438+1785761(Top 22%)744(Top 7%)744(Top 15%)
24M24.00 mi1.00 mi10628+2512339+992339+995787(Top 22%)828(Top 7%)828(Top 17%)
40K24.85 mi0.85 mi10402+2262257+822257+825807(Top 22%)924(Top 8%)924(Top 19%)
25.2M25.20 mi0.35 mi10303+992215+422215+425913(Top 22%)1044(Top 9%)1044(Top 21%)
Finish26.22 mi1.02 mi10085+2182138+772138+776224(Top 23%)1148(Top 10%)1148(Top 24%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

13301

Females

3662

F18-39

3662

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13633

Females

3807

F18-39

3807

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

13301

Females

3662

F18-39

3662

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12584

Females

3301

F18-39

3301

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12244

Females

3036

F18-39

3036

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11107

Females

2533

F18-39

2533

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9740

Females

2037

F18-39

2037

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

7874

Females

1362

F18-39

1362

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

7490

Females

1321

F18-39

1321

21M→35K

21.0 - 21.8 mi

Top 21%
×7story building
+17ft-86ft

Overall

5612

Females

662

F18-39

662

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

5761

Females

744

F18-39

744

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

5787

Females

828

F18-39

828

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5807

Females

924

F18-39

924

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5913

Females

1044

F18-39

1044

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2story building
+22ft-21ft

Overall

6224

Females

1148

F18-39

1148

Passing Analysis

Category:
Athletes Passed
4158
Passed By
515
Net Change
+3643
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13728
5K → 10K329270+59#13728#13669
10K → 15K242133+109#13669#13560
15K → 20K32869+259#13560#13301
20K → Half787+71#13301#13230
Half → 25K4148+406#13230#12824
25K → 30K60811+597#12824#12227
30K → 20M4010+401#12227#11826
20M → 21M2774+273#11826#11553
21M → 35K2781+277#11553#11276
35K → 23M3970+397#11276#10879
23M → 24M2532+251#10879#10628
24M → 40K2304+226#10628#10402
40K → 25.2M1001+99#10402#10303
25.2M → Finish2235+218#10303#10085
TOTALS4158515+3643
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing